Improvement in cocks for water-pipes



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' N. PETERS. PHOTO-LXTHOGRAPHEH, WASHINGTON D C 51ste attrut @tibia Wem-a. 'ww-1 i e WILLIAM JOHNSON, OF PHILADELPHIA, PENNSYLVANIA.

Lette/rs Patent No` 85,309, dated December 29, 1868.'

MPROVEMENT IN COCKSFOR WATER-PIPES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom tt may concern:

Be it known that I, WILLIAM-Jonnson, of 'Phila delphia, State of Pennsylvania, have invented a new Cock for Water-Pipes; and I do hereby declare the following is a full, clear, and exact description thereof,

reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The' nature of my inventioncon'sistsin constructing the valve of thick India rubber, having a tapering surface bearing against the interior of the cock; and also in passing the water throughthe interior of the stem which operates the valve; and also in the provision made for the escape of Water. To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 is a section through the cock.

Figure 2 shows the adaptation of the cock to a hydrant.

A is the main body ofthe cock, with tapering sides.

The smaller end terminates in a screw, covered by a nut, B, which encloses a stung-box, O.

To the other end is screwed the cap D, having on it the screw E, by which it is attached to the water-pipe G. (See iig. 2.)

' This cap D forms, with the body A, a taper box, in which works the rubber valve H.

This valve is of India rubber, from one to one and a quarter inch thick. The sides of it are bevclled, to-

ft the interior of the body A.

Through this valve H passes the short spindle K, and by nuts, Kl K2, the rubber is'secured in its place.

The lower end of spindle K slides in a guide, L, cast upon the cap D.

A ring, 'of leather, d, serves to make a tight joint.

M is the hollow stem, passing through the stuffingbox O, and abutting against the end of spindle K.

There are two holes, m, close at the lower end of the stem, for the passage of the water from the charnber O to the interior ofthe stern M.

A small hole, n, answers as a self-acting valve, tor the discharge of water which may remain'in the stem Mafter the valve is closed.

holes mwill then be below the packing-box C, and the Water will pass the valve H, and through the holes m up the stem When the pressure on the stem M is released, or it is drawnup, the valve H resumes its former position, closing the exit of water.

, By making the valve H of such deepv conical sides,

it insures a tight valve, and a veryr durable one.

When the valve is closed, the hole n is above the packing C, and consequently the water remaining in the stem M will be discharged.

. Fig. 2 shows the application of the cock to a hydrant..

G is the water-pipe from the main.

A,.the cock.

M, the stem, passing out with a goose-neck, from which the water is drawn for domestic purposes.

The stem terminates with a rod, R, and ball, by which the stem is depressed, or the goose-neck might curl over the top of the pillar S, and be operated bythe hand at once'; or a lever might be used for depressing the stem.

What I claim as my invention, and desire to secure l. The hydrant-water-cock, made by "the thick coni-V cal rubber valve H upon the sliding stem K, the said valve bearing against the interior ofthe conical body AA, and being operated by the hollow stem- M, through which the water passes, the parts being combined in the manner substantially as set forth.

2. The combination of the bottom cap D, body A, conical valve H, hollow, stem M, and stuing-box B, arranged in relation to each other, substantially as shown and described.

Witnesses:

EDWD. BROWN,

LEIGESTER AUSTIN.

WILLIAM JOHNSON. 

